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Line A
Total system refrigerant [kg]
Minimum
floor area
Ceiling mounted type
Wall mount and under
2
A
[m
]
(include duct type)
ceiling type
min
5
0.84
0.69
6
1.01
0.82
7
1.18
0.96
8
1.35
1.10
9
1.51
1.24
10
1.68
1.38
11
1.85
1.51
12
2.02
1.65
13
2.19
1.79
14
2.36
1.93
15
2.53
2.07
16
2.70
2.21
17
2.87
2.34
18
3.03
2.48
19
3.20
2.62
20
3.37
2.76
21
3.54
2.90
22
3.71
3.03
23
3.88
3.17
24
4.05
3.31
25
4.22
3.45
26
4.39
3.59
27
4.55
3.73
28
4.72
3.86
29
4.89
4.00
30
5.06
4.14
31
5.23
4.28
32
5.40
4.42
33
5.57
4.55
34
5.74
4.69
35
5.90
4.83
36
6.07
4.97
37
6.24
5.11
38
6.41
5.24
39
6.58
5.38
40
6.75
5.52
41
6.92
5.66
42
7.09
5.80
43
7.26
5.94
44
7.42
6.07
45
7.59
6.21
46
7.76
6.35
47
7.93
6.49
48
8.10
6.63
49
8.27
6.76
50
8.44
6.90
55
9.28
7.59
60
10.13
8.28
65
10.97
8.97
70
11.81
9.67
75
12.66
10.36
80
-
11.05
85
-
11.74
90
-
12.43
95
-
27-EN
Line B
Total system refrigerant [kg]
Minimum
floor area
Ceiling mounted type
Wall mount and under
2
A
[m
]
(include duct type)
min
5
1.68
6
2.02
7
2.36
8
2.70
9
3.03
10
3.37
11
3.71
12
4.05
13
4.39
14
4.72
15
5.06
16
5.40
17
5.74
18
6.07
19
6.41
20
6.75
21
7.09
22
7.42
23
7.76
24
8.10
25
8.44
26
8.78
27
9.11
28
9.45
29
9.79
30
10.13
31
10.46
32
10.80
33
11.14
34
11.48
35
11.81
36
12.15
37
12.49
38
12.83
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
55
-
60
-
65
-
70
-
75
-
80
-
85
-
90
-
-
95
-
WARNING
• The total amount of refrigerant in the system must be less than or equal to the maximum allowable total amount
ceiling type
of refrigerant.
1.38
The maximum allowable amount of refrigerant = 13.1 [kg].
1.65
1.93
• Keep the installation height according to the indoor unit type.
2.21
Ceiling-mounted unit (include Duct type.) : 2.2 m or more.
2.48
Wall-mounted and under ceiling unit
2.76
But install the indoor unit at least 2.5 m above the floor level since otherwise the users may injure themselves
3.03
or receive electric shocks if they poke their fingers or other objects into the indoor unit while the air conditioner
3.31
is running.
3.59
3.86
4.14
NOTE
4.42
4.69
• The maximum total amount of refrigerant allowed depends on the area of the room the system serves and the
4.97
room on the lowest floor of the basement.
5.24
• Please confirm that the condition for total system refrigerant amount is satisfied for [ 5 ]
5.52
[To determine the limit on the amount of additional refrigerant].
5.80
6.07
6.35
If the installation becomes impossible in the condition of [1], redesign the system again.
6.63
6.90
[2] [Safety measures]
7.18
7.46
This unit is equipped with Leak Detectors and Shut-off Valve units for safety.
7.73
For each indoor unit, the number of safety devices varies depending on the installation floor, total system
8.01
refrigerant amount, indoor unit installation height, and LFL value.
8.28
It's not necessary to install the safety devices when the air conditioning system is installed in a large space of LFL/
8.56
4 or less.(each indoor room, outdoor area)
8.84
9.11
9.39
9.67
Area
Safety system
9.94
No safety
10.22
(a)
measures
10.49
10.77
(a)(b)
Leak Detector only. 1 pc.
11.05
11.32
11.60
11.88
Pump-down
(a)(b)(c)
12.15
operation.
12.43
12.70
-
-
-
(a)(b)(c)
Individual shut-off
-
-
-
-
-
-
-
-
-
-
– 14 –
: 1.8 m or more.
Safety measures
Safety system operation
0 pc.
-
No safety system operation.
Not applicable
When a leak is detected,
LD
Operation cannot be continued.
operation stops.
When a leak is detected, a
system does Refrigerant
LD or
recovery to outdoor unit by
Operation cannot be continued.
2 pcs.
SV unit
pump-down operation and
(Refrigerant system will be locked.)
closes all safety shut-off valves.
After that, all systems stop.
When a leak is detected, safety
Operation cannot be continued only
shut-off valves close only for the
LD or
for the indoor units which refrigerant
2 pcs.
indoor units which refrigerant is
SV unit
is detected. Other indoor units can
leaked. After that, all systems
continue to operate.
stop.
LD : Leak Detector
SV : Shut-off Valve units
subsequent status
EN
28-EN
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